hotchkiss



(No Model.) 2 SheetsSl1eet 1.

S. M. HOTOHKISS & B, A. MASON.

MAKING BARREL HEADS FROM PULP.

No. 318,740. Patented May 26, 1885.

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(No Model.) 2 SheetsSheet 2.

S. M. HOTOHKISS & B. A. MASON.

MAKING BARREL HEADS PROM PULP. No. 318.740. Patented May 26, 18 85.

UrvtTnn STATns PATENT SAMUEL M. I-IOTCHKISS AND BENJAMIN A. MASON, OFHARTFORD, CONN.

MAKiNG BARREL-HEADS FROM PULP.

tZl-PECIFIQ-ATIOZ-T forming part; of Letters Patent No. 318,740, datedlday 26,1885.

Application filed January 24, 1885.

To ctZZ whom it may concern:

Be it known that we, SAMUEL M. HOTCH- KISS and BENJAMIN A. Mason, ofHartford, in the county of Hartford and State of Connecticut, haveinvented a certain new and useful Improvement Pertaining to MakingBarrel-Heads and the Like from Pulp, of which the following is adescription, reference being had to the accompanying drawings, where-Figure 1 is a view of the machine made use of, in elevation, withportions represented in vertical section. Fig. 2 is a detail view of asmall portion of the machine illustrated in Fig. 1, showing the devicefor locking the revolving disk or table at the proper point while abarrel-head is being formed, the view being an elevation view looking atthe device from a point midway between the main pillars of the machine.Fig. 3 is a detail plan view of the device shown in Fig. 2. Fig. 4is adetail view of the device for ejecting a barrel-head and appurtenantparts from the revolving disk or table at the proper time. The view isan elevation view from the side A. Fig. 5 is a detail plan view of thedevice shown in Fig. 4. Fig. 6 is a top or plan view of the machineshown in Fig. 1. Aportion of one of the moldfaced parts is shown asbroken away for the purpose of exposing the part beneath. Fig. 7 is aplan view, enlarged scale, of the headformer. Fig. 8 is a bottom View,enlarged scale, of the head-former. Fig. 9 is an elevation view,enlarged scale, of the head-former. Fig. 10 is a view of the head-formerin central vertical section.

This machine is designed for forming barrel-heads and other similararticles from pulp.

The frame of the machine is composed of the basecasting a and the topcasting, I), strongly united by the pillars or bolts 0.

The letter (1 denotes a rotating table or disk hinged on one of thepillars c. It isintended to be rotated by hand and to be locked in placeat different points in its rotation while a barrel-head is being formed.The lockingpin a is provided for this purpose, co-operating with thesockets f in the table, entering the same by gravity when permitted, andlifted out therefrom, when desired, by the lever g. In the rotatingtable of the machine there are four of these sockets f, each of which isappurtenant to one of the orifices in the rotating (No model.)

table designed for the formation of a barrelhead. These four orificesare readily observed in Fig. 6, and (two of them) are denoted by theletters h. In the forming of a barrel-head one of these orifices isbrought into vertical line with the piston which does the pressing,which is underneath the rotating table, and with the stationary platen,forming a resisting medium above the rotating table. The stationaryresisting-platen just referred to is suspended from the top casting, andits face or lower end is equipped with aface-platc, 7', surfaced with afinely-perforated mold-face, and this face-plate is perforatedverticallythrough and through and grooved laterally on top, saidconstruction of finely-perforated mold-face, perforated face-plate, andgrooves on the back thereof being for the escape of water expressed fromthe article being formed under com pression.

The piston above referred to is denoted by the letter 70. Practically itis best made in two parts screwed or bolted together, as shown, but itis virtually one piece and will be so treated herein. Its periphery isfurnished at one point with a drainage cup or shelf to catch the waterwhich is expressed from the article under compression, from whichdrainage-cup it is properly conducted away. This piston it enters andreciprocates vertically in the hydraulic cylinder at, formed in thebasecasting a. To raise this piston, and in the raising form andcompress a barrel-head, water is forced into the hydraulic cylinder inthrough duct or by a hydraulic pump, raising the piston to its work withgreat power. The weight of the piston causes it to fall or retract whenthat movement is desired simply by permitting the water to escape fromthe cylinder.

It will be understood from what has been already described that thebarrel-head or other article is formed within the orifice h and betweenthe piston 7.: and platen The other parts appurtenant thereto notalready shown will now be described.

Each orifice h is furnished with a ledge or shelf, 0, on which lies aplate, p, perforated through and through vertically for the escape ofexpressed water. On this plate 1) lies another and peculiarly-shapedplate, 1, which may well be called a former, becauseit gives form andshape to what would commonly be called the outer side of thebarrel-head.

This former is furnished on its upper surface or working face with afinely perforated moldface, and is perforated through and throughvertically and grooved laterally underneath for the escape of waterexpressed from the article under compression. The rim or periphery ofthe barrel-head isformed by the rim-formert, which lies on thehead-former.

On top of the rim-former t is a cup-ring, 8. These partsthe plate p, theformer r, the rim-former t, and the cup-ring sare set into one of theorifices h, and the resulting recess or cup is filled with pulp beforethese parts are brought underneath the fixed platen, the cup-ring 8making said cup or recess largerand capable of holding more pulp thanwould otherwise be the case. As the water in the pulp will begin todrain off and away as soon as the ,pulp is placed in saidcup or recess,it is evident that by permitting thisdrainage to go on to a greater orless degree the operator can adjust the density of the article to beformed at pleasure.

It will be observed that the formingof the barrel-head in a horizontalposition is essential in arriving at homogeneity and equal density ofthe barrel-head in all its parts, for if the barrel-head Were to beformed in a vertical position, then the natural drainage, which beginsthe moment the pulp is placed in the matrix, cup,or space where thearticle is to be formed, will make one part of the barrel-head moredense than anotherpart, with serious resulting defects in warping anddrying.

The cup or matrix being filled with pulp, as already described, it isbrought between the piston and the platen. The piston is raised and thebarrel-head is formed under great pressure, expressing the water to agreat degree, after which the piston is dropped, the table dis rotatedalong in its course, and ,at the proper point in such rotation thebarrelhead thus formed is removed from the table. The proper point forthus removing the barrel-head is when it is immediately over theejecting device. The letter M denotes the ej ector,havin g averticalmovementina proper socket attached to the frame of the machine for thatpurpose The ejector is raised and lowered through the medium of thelever 1), gear w, and rack z, appurtenant totheejector. Theoperation ofthese parts is so simple as to be readily understood. The ejector inrising carries with it the plate 11, the former r, the rim-former t, thecup-ring s, and the barrelhead, the latter remaining in the rim-former tfor removal to a drying-press. The plate 19 is replaced in thehead-forming orifice in the rotating table; also the former r. Anotherrimformer takes the place of the one just removed, and the cup-ring s isput back into its place, and these parts are now ready to be used in theforming of another barrel-head. The barrel -head which has just beenformed is removed to the drying-press in the rim-former with a certainspecial advantageto wit: this or almost any other article formed frompulp under powerful compression, in substantially the manner alreadydescribed, will immediately expand somewhat when the pressure isremoved, and as it is desirable to have all -barrel-heads of the samediameter, that end is attained by keeping the barrel-head in therim-former until the material is dried and fixed in shape.

In suitable position, preferably fast to .the sideof the machine, thepulpvat B is secured with an outlet-tube, B, arranged over the table, sothat the pulp may be discharged from the service-measure B in the tubeinto the orifices h, when-each of the latter comes in succession underthe tube.

The improvement claimed herein is 1. In combination, the fixed platen,the pressing-piston, the revolving table provided with formingorifices,the headformers r, and the rim-formers 15, substantially as described,and for the purpose set forth.

2. In combination, the fixed platen, the pressing-piston, aforming-orifice, the headformer r, the rim-former t, andthe cupri-ng s,substantially as described, and for the purpose set forth.

3. In combination, the fixed platen, the pressing-piston, the rotatingtable provided with forming-orifices, and the ejector, substantially asdescribed, and for the purpose set forth.

4. In combination, the fixed platen, the pressing-piston, the rotarytable provided 'with forming-orifices, the ejector, the head former, therim-former, and thecup-ring, substantially as described.

SAMUEL M. HOTOHKISS. BENJAMIN A. MASON.

Witnesses:

CHAS. L. BURDETT, H. R. WILLIAMs.

IOC

